... company manufacture the Rechargeable External Battery Case for iPhone 4G /External batteries case for Iphone 4/4G, Specification: 1. The sleek power pack snaps inconspicuously onto the back ... ,leather power case for Ipad,Mobile power banks,etc. welcome enquiry. External protect battery case for Iphone 4/4G package: Rechargeable External Battery Case for iPhone 4G (IP-015)